Horizontal pyrolysis furnace with multi-stage shearing structure for solid organic waste

Abstract

The application discloses a solid organic waste horizontal pyrolysis furnace with a multi-stage shearing structure, belongs to the technical field of pyrolysis furnaces, and is an improvement on the traditional single straight-through furnace body structure, wherein the whole pyrolysis furnace is divided into a pyrolysis part and a preheating part, the organic solid waste is continuously batched, crushed and preheated by using the shearing discharge column in the preheating part, the granularity of the material is reduced, and the pyrolysis speed is improved; in the main pyrolysis link, a double-cylinder furnace structure formed by the pyrolysis cylinder and the pyrolysis part is arranged; under the rotation of multiple shearing plates, small-particle solid waste is in a multi-stage shearing state of constantly "turning upward and falling downward", and the material is transported along the inclined surface of the shearing plate to the end of the pyrolysis part in the process of turning upward; in the process, the waste gas, carbon residue and pyrolysis oil are continuously separated through the exhaust duct, the residue discharge port and the oil discharge hole respectively, so that the heat conduction performance in the furnace is improved.

Description

Technical Field

[0001] This invention relates to the field of pyrolysis furnace technology, and more specifically, to a horizontal pyrolysis furnace for solid organic waste with a multi-stage shear structure. Background Technology

[0002] Organic solid waste refers to organic solid waste generated during people's production and daily life processes that has lost its original value and is discarded. The main methods for treating these organic solid wastes include landfill, biodegradation, incineration, and pyrolysis.

[0003] Pyrolysis is a method of heating organic solid waste at high temperatures under anaerobic conditions to decompose it into three types of products: gas, liquid, and solid. It is currently the most promising organic solid waste treatment technology. Its most significant advantages are low infrastructure investment and the fact that the gas produced after pyrolysis can be used as fuel.

[0004] In the existing technology, most pyrolysis furnaces are single cylindrical structures. For example, patent number CN113462411B discloses a horizontal pyrolysis device for solid waste treatment. It drives the pyrolysis furnace to rotate and continuously tumbles the solid waste inside the furnace. However, due to the single straight-through cylindrical structure, even if the furnace rotates circumferentially, the degree of tumbling of the solid waste is limited. Under the action of gravity, the solid waste will still easily accumulate at the bottom of the furnace, making it difficult for the solid waste to be heated evenly and reducing the pyrolysis efficiency of the solid waste.

[0005] In addition, during the pyrolysis process, products such as pyrolysis gas, pyrolysis oil and solid carbon slag are continuously generated in the furnace. Currently, slag discharge port and exhaust port are generally opened on one side of the furnace body, which makes it impossible to separate the waste gas and the carbonized carbon slag and pyrolysis oil from the reactants in a short distance and in a timely manner during the pyrolysis process, resulting in a reduction in the heat conduction efficiency of the furnace body.

[0006] To address these issues, a horizontal pyrolysis furnace for solid organic waste with a multi-stage shear structure is proposed. Summary of the Invention

[0007] The purpose of this invention is to solve the problems of traditional single-through cylindrical pyrolysis furnaces, which make it difficult to achieve uniform heating of materials inside the furnace and to simultaneously separate and discharge pyrolysis products during the pyrolysis process. The invention provides a horizontal pyrolysis furnace for solid organic waste with a multi-stage shearing structure.

[0008] The objective of this invention can be achieved through the following technical solution: a horizontal pyrolysis furnace for solid organic waste with a multi-stage shearing structure, comprising a horizontally arranged pyrolysis section, a preheating section, and a feeding mechanism. A heating cylinder connected to the feeding mechanism and extending to the outer end of the pyrolysis section is fixedly installed inside the preheating section. A rotating cylinder is rotatably installed on the heating cylinder. The heating cylinder and the rotating cylinder are respectively provided with an inner material port and an outer material port that communicate with each other on their end walls inside the preheating section. A shearing discharge column connected to the outer material port is fixedly sleeved on the rotating cylinder.

[0009] The pyrolysis section is a conical structure with an inner diameter that gradually decreases towards the preheating section. The left and right ends of the rotating cylinder are respectively movably fitted with a right partition and a left partition, which are fixedly installed at the ends of the pyrolysis section and the preheating section. The top of the right partition has a feed inlet adapted to the shearing discharge column. A pyrolysis cylinder with multiple slag discharge holes at the bottom and connected to the feed inlet is fixed between the left partition and the right partition. Multiple shearing plates are distributed on the end wall of the rotating cylinder located inside the pyrolysis cylinder.

[0010] The upper wall of the pyrolysis cylinder is provided with a vent port in the horizontal direction. A slag discharge ring cavity is reserved between the outer wall of the pyrolysis cylinder and the inner wall of the pyrolysis section. The bottom wall of the pyrolysis section is provided with a plurality of oil discharge holes that are connected to the slag discharge ring cavity.

[0011] Furthermore, the feeding mechanism includes a feeding cylinder fixedly installed at the end of the preheating section. Inside the feeding cylinder, a spiral feeder plate is rotatably installed, extending through the heating cylinder and corresponding to the position of the inner material port. This feeder plate is used to continuously transport the large particles of organic solid waste to be pyrolyzed into the heating cylinder through the feeding mechanism, and then guide them into the preheating section for crushing and pulverizing through the inner material port and the outer material port.

[0012] Furthermore, a partition plate is fixed inside the heating cylinder near the material inlet, and multiple heating tubes are embedded inside the heating cylinder on the side away from the material inlet. The heating tubes are isolated from the material inlet by the partition plate installed inside the heating cylinder.

[0013] Furthermore, the shearing discharge column is a spiral structure fixed to the outer end wall of the rotating cylinder and its outer diameter gradually increases in the clockwise direction. The bottom end of the shearing discharge column has a discharge gap that corresponds to the position of the external material outlet and is close to the side of the feeding mechanism.

[0014] Furthermore, the shearing discharge column has a scraper plate fixedly installed on the side with the longest outer diameter, which is movably fitted to the inner wall of the preheating section, and the shearing discharge column has an inclined cavity that slopes downward toward the right partition and is adapted to the feed inlet at the end near the scraper plate.

[0015] Furthermore, the outer end wall of the shearing discharge column is provided with multiple sets of spaced shearing teeth and stirring rods along its spiral direction. Each set of shearing teeth and stirring rods is provided with multiple sets and is horizontally distributed along the horizontal plane of the shearing discharge column. The size and length of the shearing teeth and stirring rods gradually decrease along the spiral direction extending outward from the shearing discharge column.

[0016] Furthermore, the shearing plates are arranged horizontally in multiple sets, staggered front to back, with each set of shearing plates distributed in a ring on the rotating cylinder and inclined towards the left partition side.

[0017] Furthermore, the pyrolysis section includes an outer cylinder and an inner cylinder connected by an inner and outer sleeve. The oil drain holes are evenly distributed on the bottom wall of the inner cylinder. An oil drain tank connected to multiple oil drain holes is embedded in the bottom wall of the outer cylinder.

[0018] Furthermore, the bottom wall of the left partition is provided with a slag discharge port that communicates with the slag discharge ring cavity. A slag discharge space is reserved between the left partition and the outer end of the pyrolysis section. A slag discharge hopper is provided in the slag discharge space, with one end connected to the slag discharge port and the other end penetrating to the bottom of the outer cylinder and the inner cylinder.

[0019] Compared with the prior art, the advantages of this invention are:

[0020] 1. This solution improves upon the traditional single-through furnace structure by creating a double-cylinder furnace structure consisting of a pyrolysis cylinder and a pyrolysis section. Organic solid waste enters the pyrolysis cylinder and, under the rotation of multiple shear plates, continuously "tumbles upward and scatters downward." During the upward tumbling process, the material is conveyed along the inclined surface of the shear plates towards the end of the pyrolysis section. This achieves both large-area diffusion and distribution of the material within the pyrolysis cylinder, providing good heating uniformity, and continuous material conveying. The generated waste gas is directly discharged upward through the exhaust duct. The generated charcoal slag and pyrolysis oil fall into the slag discharge ring cavity through the slag discharge holes during the large-scale material turning process of the shear plates and are conveyed along the conical inclined surface of the pyrolysis section towards the slag discharge port. In this process, the oil discharge holes on the bottom wall of the pyrolysis section are used to separate the pyrolysis oil and charcoal slag over a long distance, achieving timely separation of pyrolysis products during the pyrolysis process and improving the thermal conductivity within the furnace.

[0021] 2. This scheme also divides the entire pyrolysis furnace into a horizontally set pyrolysis section and a preheating section. The shearing discharge column in the preheating section is used to crush and preheat the input organic solid waste. The solid waste is introduced into the preheating section, and the shearing discharge column is driven by counterclockwise rotation. Its outer end wall gradually contacts the solid waste falling into the preheating section. The solid waste is fully sheared and crushed by the contact roller pressing method of gradually increasing the extrusion pressure.

[0022] In this process, during one rotation of the shearing discharge column, the bottom gap of the shearing discharge column rotates upward to block the inner material inlet. During this process, the feeding mechanism stores material in the heating cylinder. After one rotation of the shearing discharge column, the shovel plate pushes the small particles of solid waste at the bottom upward and gathers them in the inclined cavity. As the inclined cavity connects to the inlet, the small particles of solid waste are guided into the pyrolysis cylinder through the inclined surface of the inclined cavity and the inlet. After the gap rotates downward and connects with the outer material inlet, the next round of feeding begins. This cycle is repeated to achieve continuous batch feeding, crushing, and preheating of organic solid waste. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the external structure of the present invention;

[0024] Figure 2 Partial cross-section of the present invention Figure 1 ;

[0025] Figure 3 Partial cross-section of the present invention Figure 2 ;

[0026] Figure 4 This is an internal cross-sectional view of the junction between the pyrolysis section and the preheating section of the present invention;

[0027] Figure 5 This is a bottom view of the junction of the rotating cylinder, shearing discharge column, and shearing plate of the present invention.

[0028] Figure 6 This is a schematic diagram of the structure when the heating cylinder and the rotating cylinder of the present invention are separated;

[0029] Figure 7 This is a partial internal cross-sectional view of the present invention;

[0030] Figure 8 This is a schematic diagram of the structure of the present invention when the rotating cylinder drives the shearing discharge column and multiple sets of shearing plates to rotate. Figure 1 ;

[0031] Figure 9 This is a schematic diagram of the structure of the present invention when the rotating cylinder drives the shearing discharge column and multiple sets of shearing plates to rotate. Figure 2 ;

[0032] Figure 10 This is a cross-sectional view of solid waste being discharged from the external material port when the rotating cylinder of the present invention drives the shearing discharge column to initially rotate;

[0033] Figure 11 This is a cross-sectional view of the solid waste at the bottom of the preheating section being driven upwards by the rotating cylinder of the present invention after it has driven the shearing discharge column to rotate nearly one revolution.

[0034] Explanation of the labels in the diagram:

[0035] 1. Pyrolysis section; 11. Outer cylinder; 12. Inner cylinder; 13. Oil discharge tank; 14. Slag discharge hopper; 15. Exhaust duct; 2. Preheating section; 3. Feeding mechanism; 31. Feeding cylinder; 32. Spiral feeder; 4. Heating cylinder; 401. Inner material inlet; 402. Heating tube; 5. Rotating cylinder; 501. Outer material inlet; 6. Left partition; 601. Slag discharge port; 7. Right partition; 701. Feed inlet; 8. Pyrolysis cylinder; 9. Shearing discharge column; 901. Shearing saw teeth; 902. Stirring rod; 903. Inclined cavity; 904. Shovel plate; 10. Shearing plate. Detailed Implementation

[0036] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0037] Example 1: To address the limitations of traditional single-channel cylindrical pyrolysis furnaces, which struggle to achieve uniform heating of materials and simultaneous separation of pyrolysis products during the pyrolysis process, the following technical solution is proposed:

[0038] This invention discloses a horizontal pyrolysis furnace for solid organic waste with a multi-stage shear structure. Please refer to [link / reference]. Figure 1 It includes a horizontally arranged pyrolysis section 1, a preheating section 2, and a feeding mechanism 3 installed at the other end of the preheating section 2. Both the pyrolysis section 1 and the preheating section 2 are equipped with heating devices on their exteriors. The heating devices heat the pyrolysis section 1 and the preheating section 2, so that the interiors of the pyrolysis section 1 and the preheating section 2 are respectively in a high-temperature pyrolysis environment and a medium-high temperature preheating environment. The specific ambient temperature is set according to the actual pyrolysis product requirements.

[0039] Please see Figure 2-4 The preheating section 2 is equipped with a heating cylinder 4 that is connected to the feeding end of the feeding mechanism 3 and extends to the outer end of the pyrolysis section 1. A rotating cylinder 5 is mounted on the heating cylinder 4. The heating cylinder 4 and the rotating cylinder 5 are respectively provided with internal material ports 401 and 5014 that are connected to the inside and outside. A partition is fixed inside the heating cylinder 4 near the internal material port 401. Multiple heating tubes 402 are embedded in the heating cylinder 4 on the side away from the internal material port 401. The heating tubes 402 and the internal material port 401 are isolated from each other by the partition installed inside the heating cylinder 4. The setting of the heating tubes 402 further increases the temperature of the pyrolysis environment inside the pyrolysis section 1, so as to achieve a relatively balanced internal and external temperature inside the pyrolysis section 1.

[0040] A drive structure for rotating the rotating cylinder 5 is provided at the end of the pyrolysis section 1 away from the feeding mechanism 3. The drive structure can be composed of a drive motor and a gear set. One gear in the gear set is fixedly sleeved on the end of the rotating cylinder 5, and the other meshing gear is rotatably installed at the end of the pyrolysis section 1 and connected to the drive end of the drive motor, so as to realize the fixed installation of the heating cylinder 4 and the rotatable installation of the rotating cylinder 5 located outside the heating cylinder 4.

[0041] The feeding mechanism 3 includes a feeding cylinder 31 fixedly installed at the end of the preheating section 2. A spiral feeder 32 is rotatably installed inside the feeding cylinder 31, extending through the heating cylinder 4 and corresponding to the position of the inner material port 401. A shearing discharge column 9 connected to the outer material port 501 is fixedly sleeved on the end wall of the rotating cylinder 5 located inside the preheating section 2. A feeding port 701 adapted to the shearing discharge column 9 is opened at the top of the right partition 7.

[0042] The feeding mechanism 3 is used to continuously transport large particles of organic solid waste to be pyrolyzed into the heating cylinder 4, and guide them into the preheating section 2 through the inner material port 401 and the outer material port 501. In this process, the shearing discharge column 9, which rotates synchronously with the rotating cylinder 5, crushes and shears the organic solid waste that initially enters the preheating section 2 to reduce the particle size of the solid waste entering the pyrolysis section 1, thereby increasing the pyrolysis speed of the solid waste in the subsequent pyrolysis stage. The small particles of solid waste after processing are carried upward to the feed port 701 during the rotation of the shearing discharge column 9, and fall into the pyrolysis section 1 from the feed port 701 for subsequent pyrolysis reaction.

[0043] Please see Figure 3-8 The pyrolysis section 1 is a conical structure with an inner diameter that gradually decreases towards the preheating section 2. The pyrolysis section 1 includes an outer cylinder 11 and an inner cylinder 12 that are connected together. The inner side of the preheating section 2 near the pyrolysis section 1 and the end of the pyrolysis section 1 away from the preheating section 2 are respectively fixedly connected to a right partition 7 and a left partition 6 that are movably sleeved with the outer wall of the rotating cylinder 5. A pyrolysis cylinder 8 with multiple slag discharge holes at the bottom is fixedly connected between the left partition 6 and the right partition 7. The pyrolysis cylinder 8 is connected to the feed inlet 701.

[0044] Multiple sets of shearing plates 10 are distributed on the inner end wall of the rotating drum 5 inside the pyrolysis drum 8. The shearing plates 10 are horizontally arranged in multiple sets, staggered front and back. Each set of shearing plates 10 is distributed in a ring on the rotating drum 5 and is inclined towards the left partition 6. When organic solid waste enters the pyrolysis drum 8, under the rotation of the multiple sets of shearing plates 10, the organic solid waste is continuously tumbling upward and falling downward. During the upward tumbling process, the material is conveyed towards the end of the pyrolysis section 1 along the inclined surface of the shearing plates 10. This achieves both a large-area diffusion distribution of the material in the pyrolysis drum 8, providing good heating uniformity, and continuous conveying of the material towards the outer end of the pyrolysis section 1 during the continuous up-and-down tumbling process.

[0045] A slag discharge ring cavity is reserved between the outer wall of the pyrolysis cylinder 8 and the inner wall of the pyrolysis section 1. A slag discharge port 601 connected to the slag discharge ring cavity is opened on the bottom wall of the left partition 6. A slag discharge space is reserved between the left partition 6 and the outer end of the pyrolysis section 1. A slag discharge hopper 14 is provided in the slag discharge space, with one end connected to the slag discharge port 601 and the other end penetrating to the bottom of the outer cylinder 11 and the inner cylinder 12.

[0046] The bottom wall of the pyrolysis section 1 is provided with multiple oil discharge holes that are connected to the slag discharge annular cavity. The oil discharge holes are evenly distributed on the bottom wall of the inner cylinder 12. The bottom wall of the outer cylinder 11 is fitted with an oil discharge box 13 that is connected to the multiple oil discharge holes.

[0047] The upper wall of the pyrolysis cylinder 8 has a horizontally opened exhaust port. An exhaust duct 15 is embedded at the exhaust port, which extends to the outside of the pyrolysis section 1 and is used to transport the waste gas. The generated waste gas is directly discharged upward through the exhaust duct 15. The generated carbon slag and pyrolysis oil substances fall into the slag discharge ring cavity through the slag discharge hole during the large-scale material turning process of the shear plate 10, and are transported along the conical inclined surface of the inner cylinder 12 toward the slag discharge port 601. During the transportation process, the oil discharge hole on the bottom wall of the pyrolysis section 1 is used to achieve long-distance separation of pyrolysis oil and carbon slag, so as to achieve timely separation of pyrolysis products during the pyrolysis process and improve the heat conduction performance inside the furnace.

[0048] Example 2: Based on Example 1, this example provides a detailed supplementary explanation of the specific structure of the shearing discharge column 9, as follows:

[0049] Please see Figure 3 , 5 The shearing discharge column 9 is a spiral structure fixed to the outer end wall of the rotating cylinder 5 and its outer diameter gradually increases in the clockwise direction. The bottom end of the shearing discharge column 9 is provided with a material drop gap corresponding to the position of the outer material port 501 and close to the side of the feeding mechanism 3. The material drop gap is connected to the outer material port 501, so that when the inner material port 401 and the outer material port 501 are connected, the organic solid waste conveyed to the heating cylinder 4 by the feeding mechanism 3 can smoothly pass through the inner material port 401, the outer material port 501 and the material drop gap and fall into the preheating section 2. The heating cylinder 4 is located between the heating tube 402 and the discharge port of the feeding mechanism 3 to form a storage cavity.

[0050] As the shearing discharge column 9 rotates with the rotating drum 5, the outer material port 501 and the material drop gap rotate to the other side of the inner material port 401 and are isolated from it. The organic solid waste continuously conveyed by the feeding mechanism 3 is stored in the storage chamber. After the shearing discharge column 9 rotates one revolution, when the outer material port 501 and the inner material port 401 are connected, the pre-stored organic solid waste falls into the preheating section 2 through the outer material port 501 and the material drop gap, expanding the organic solid waste feeding area and facilitating a shorter feeding time.

[0051] Please see Figure 5 , 89. A scraper plate 904 is fixedly installed on the side with the longest outer diameter of the shearing discharge column 9, which is in movable contact with the inner wall of the preheating section 2. An inclined cavity 903 with an inclination downward towards the right partition 7 and adapted to the feed inlet 701 is opened at the end of the shearing discharge column 9 near the scraper plate 904. Multiple sets of shearing saw teeth 901 and stirring rods 902 are provided on the outer end wall of the shearing discharge column 9 along its spiral direction. Each set of shearing saw teeth 901 and stirring rods 902 is provided in multiples and is horizontally distributed along the horizontal plane of the shearing discharge column 9. The size of the shearing saw teeth 901 gradually decreases along the spiral direction of the shearing discharge column 9 extending outward. The length of the stirring rods 902 also gradually decreases along the spiral direction of the shearing discharge column 9 extending outward.

[0052] Please see Figure 10 , 11 The counterclockwise rotating drive shearing discharge column 9 gradually contacts the solid waste falling into the preheating section 2. The organic solid waste is fully sheared and crushed by the contact roller pressing method with gradually increasing extrusion pressure. The outer spiral roller pressing surface of the shearing discharge column 9 is the main crushing surface, and multiple sets of shearing saw teeth 901 and stirring rods 902 distributed outside the shearing discharge column 9 are used as auxiliary shearing structures to improve the crushing and stirring of organic solid waste during the crushing process, promote the shearing effect, and reduce the particle size of organic solid waste.

[0053] In this process, during one rotation of the shearing discharge column 9, the copper rotating cylinder 5 at the bottom of the shearing discharge column 9 rotates upward to block the inner material port 401. During this process, the feeding mechanism 3 stores material in the heating cylinder 4. After one rotation of the shearing discharge column 9, the scraper plate 904 pushes the small particles of solid waste at the bottom upward and gathers them into the inclined cavity 903. As the inclined cavity 903 gradually approaches and connects with the feed port 701, the small particles of solid waste are introduced into the pyrolysis cylinder 8 through the inclined surface of the inclined cavity 903 and the feed port 701. After the material discharge gap and the outer material port 501 rotate downward and connect with the inner material port 401, the next round of feeding is carried out. This cycle is repeated to achieve continuous batch feeding, crushing and preheating of organic solid waste.

[0054] In summary: the traditional single-through furnace structure is improved by dividing the entire pyrolysis furnace into a pyrolysis section 1 and a preheating section 2. The shearing discharge column 9 in the preheating section 2 is used to continuously crush and preheat the organic solid waste in batches, thereby reducing the particle size of the material and increasing the subsequent pyrolysis speed.

[0055] In the main pyrolysis stage, a double-cylinder furnace structure consisting of pyrolysis cylinder 8 and pyrolysis section 1 is set up. The crushed and sheared organic solid waste is introduced into the pyrolysis cylinder 8 through the feed inlet 701 as the shear discharge column 9 rotates upward. Under the rotation of multiple sets of shear plates 10, the small particles of solid waste are in a multi-stage shearing state of continuous "upward tumbling and downward scattering". The material is also continuously conveyed towards the end of the pyrolysis section 1 along the inclined surface of the shear plate 10 during the upward tumbling process. During this pyrolysis process, the generated waste gas, carbon slag and pyrolysis oil are separated in a timely and continuous manner through the exhaust channel 15, slag discharge port and oil discharge hole to improve the heat conduction performance inside the furnace.

[0056] The above are merely preferred embodiments of the present invention; however, the scope of protection of the present invention is not limited thereto; any equivalent substitutions or modifications made by those skilled in the art within the technical scope disclosed in the present invention, based on the technical solution and its improved concept, should be covered within the scope of protection of the present invention.

Claims

1. A horizontal pyrolysis furnace for solid organic waste with a multi-stage shearing structure, comprising a horizontally arranged pyrolysis section (1), a preheating section (2), and a feeding mechanism (3), characterized in that: The preheating section (2) is fixedly installed with a heating cylinder (4) that is connected to the feeding mechanism (3) and extends to the outer end of the pyrolysis section (1). A rotating cylinder (5) is installed on the heating cylinder (4) and the heating cylinder (4) and the rotating cylinder (5) are respectively provided with an inner material port (401) and an outer material port (501) that are connected to the outside. A shearing discharge column (9) that is connected to the outer material port (501) is fixedly sleeved on the rotating cylinder (5). The feeding mechanism (3) includes a feeding cylinder (31) fixedly installed at the end of the preheating section (2). The feeding cylinder (31) has a spiral feeding plate (32) that extends through and into the heating cylinder (4) and corresponds to the position of the inner material port (401). The heating cylinder (4) has a partition plate fixed inside, which is located near the position of the inner material port (401). Multiple heating tubes (402) are embedded in the heating cylinder (4) on the side away from the inner material port (401). The heating tubes (402) and the inner material port (401) are separated by the partition plate. The shearing discharge column (9) is a spiral structure fixed to the outer end wall of the rotating cylinder (5) and its outer diameter gradually increases in the clockwise direction. The bottom end of the shearing discharge column (9) has a discharge gap that corresponds to the position of the outer material port (501) and is close to the feeding mechanism (3). The pyrolysis section (1) is a conical structure with an inner diameter that gradually decreases toward the preheating section (2). The rotating cylinder (5) is movably fitted with a right partition (7) and a left partition (6) fixed to the ends of the pyrolysis section (1) and the preheating section (2), respectively. The top of the right partition (7) is provided with a feed inlet (701) that is compatible with the shearing discharge column (9). A pyrolysis cylinder (8) with multiple slag discharge holes at the bottom and connected to the feed inlet (701) is fixed between the left partition (6) and the right partition (7). Multiple shearing plates (10) are distributed on the end wall of the rotating cylinder (5) located inside the pyrolysis cylinder (8). The upper wall of the pyrolysis cylinder (8) is provided with an exhaust port, and a slag discharge ring cavity is reserved between the outer wall of the pyrolysis cylinder (8) and the inner wall of the pyrolysis section (1). The bottom wall of the pyrolysis section (1) is provided with multiple oil discharge holes that are connected to the slag discharge ring cavity.

2. The horizontal pyrolysis furnace for solid organic waste with a multi-stage shear structure according to claim 1, characterized in that: The shearing discharge column (9) has a scraper plate (904) fixedly installed on the side with the longest outer diameter, which is in contact with the inner wall of the preheating section (2). The shearing discharge column (9) has an inclined cavity (903) that is inclined downward toward the right partition (7) and adapted to the feed inlet (701) at the end near the scraper plate (904).

3. The horizontal pyrolysis furnace for solid organic waste with a multi-stage shear structure according to claim 2, characterized in that: The outer end wall of the shearing discharge column (9) is provided with multiple sets of spaced shearing teeth (901) and stirring rods (902) along its spiral direction. Each set of shearing teeth (901) and stirring rods (902) is provided with multiple sets and is horizontally distributed along the horizontal plane of the shearing discharge column (9). The size and length of the shearing teeth (901) and stirring rods (902) gradually decrease along the spiral direction extending outward from the shearing discharge column (9).

4. The horizontal pyrolysis furnace for solid organic waste with a multi-stage shear structure according to claim 1, characterized in that: The shearing plates (10) are arranged in multiple sets horizontally and staggered front to back. Each set of shearing plates (10) is distributed in a ring on the rotating cylinder (5) and is inclined towards the left partition (6).

5. The horizontal pyrolysis furnace for solid organic waste with a multi-stage shear structure according to claim 1, characterized in that: The pyrolysis section (1) includes an outer cylinder (11) and an inner cylinder (12) connected by an inner and outer sleeve. The oil drain holes are evenly distributed on the inner bottom wall of the inner cylinder (12). An oil drain tank (13) connected to multiple oil drain holes is embedded in the inner bottom wall of the outer cylinder (11).

6. The horizontal pyrolysis furnace for solid organic waste with a multi-stage shear structure according to claim 5, characterized in that: The bottom wall of the left partition (6) is provided with a slag discharge port (601) that is connected to the slag discharge ring cavity. A slag discharge space is reserved between the left partition (6) and the outer end of the pyrolysis section (1). A slag discharge hopper (14) is provided in the slag discharge space, with one end connected to the slag discharge port (601) and the other end penetrating to the bottom of the outer cylinder (11) and the inner cylinder (12).

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